Academic work is a broad term that encompasses a variety of activities related to the pursuit of knowledge. A TREATISE is an extended written discourse on a particular subject, often used to provide a comprehensive overview of a topic. A STUDY is a detailed examination of a particular subject, often conducted over a period of time. Studies are typically conducted in order to gain a better understanding of a particular phenomenon or to test a hypothesis. Finally, studies are a form of academic work that involves the systematic collection and analysis of data in order to answer a specific research question.